From a97fe5f1d3d959bb8d555fcc8eeca9e82f8e12d5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Robert=20J=C3=B6rdens?= <rj@quartiq.de>
Date: Mon, 26 Oct 2020 17:37:02 +0100
Subject: [PATCH] math: add {fmin,fmax}{f,} for thumb*-none-eabi* (#389)

These are exposed in core::f32

close #354
c.f. rust-lang/rust#62729
Patch from @whitequark (https://paste.debian.net/1168430/)
---
 library/compiler-builtins/src/math.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/library/compiler-builtins/src/math.rs b/library/compiler-builtins/src/math.rs
index 4b27cb80f683..94f91124bf0f 100644
--- a/library/compiler-builtins/src/math.rs
+++ b/library/compiler-builtins/src/math.rs
@@ -92,6 +92,10 @@ no_mangle! {
 // only for the thumb*-none-eabi* targets
 #[cfg(all(target_arch = "arm", target_os = "none"))]
 no_mangle! {
+    fn fmin(x: f64, y: f64) -> f64;
+    fn fminf(x: f32, y: f32) -> f32;
+    fn fmax(x: f64, y: f64) -> f64;
+    fn fmaxf(x: f32, y: f32) -> f32;
     // `f64 % f64`
     fn fmod(x: f64, y: f64) -> f64;
     // `f32 % f32`